Refuse-ejector for ships.



W. S. PARSONS.

REFUSE EJECTOR FOR SHIPS.

APPLICATION FILED JULY 30,1915.

LQfiLQlK Patented Jan. 1,1918.

STATES PAT N To.

WILLIAM STEEL PARSONS, 0E GROVE PARK, ENGLAND, A SIGN E To J. STONE &

COMPANY LIMITED, 0E panacea-ENGLAND, 7 7

REFUSE-EJECTOR FOR SHIPS.

Patented Jan.1,1918.

Application filed July 30, 1915. SerialNo. 42,853. i j

To all whom it may concern:

Be it known that I, WILLIAM STEEL PAR-.

sons, a subject of the King of Great Britain, and resident of Glymedale,Baring Road, Grove Park, in the county of Kent, England, have inventednew and useful Improvements in Refuse-Ejectors for Ships, of which thefollowing'is a specification.

This invention relates to new or improved apparatus for controlling theorder or sequence of mechanical operations in apparatus for dischargingrefuse from ships particularly the operations controlled by valvulardevices employed in ships ashes expellers it being necessary to providemechanism for insuring that the operation of one device shall not takeplace until the operation of another device has commenced. This may beessential in order to prevent foolish or careless persons from damagingor wrecking an apparatus by starting the wrong operation in advance ofanother or by starting two operations at incorrect times relatively toone another. The employment of mechanical gearing for the purposerequires great skill and precision in assembling and connecting up theparts in order that the secondary operation may be correctly timed inrelation with the primary operation. If such mechanical parts are notarranged accurately or if they become Strained or loose, there is adanger of the operations not taking place in properly timed relation anddamage may result. The object, therefore, of the present improve mentsis to provide simplified apparatus which will not be costly to produce,which will be easy to assemble so that accurate timing of the secondaryoperationmay be had, and which will not be liable to get out of order,so that in all circumstancesit is certain that one particular operationmust commence before the second operation is started.

This invention provides the combination with a manually or mechanicallyoperated primary device which controls or performs one operation in thedischarge apparatus and a secondary device which controls or performsanother operation, of a fluid pressure transmission arrangementconnected between the two devices in such manner that, upon adjustingthe primary device to start the first operation, the movement of theprimary device or its operating means brings about a release of fluidpressure, or sets up or transmits fluid pressure, the change ofpressure'bringing about or per-' mitting the adjusting. of the secondaryde-v vice, for starting the second operation.

It is apparent that the orderor sequence of operations of any number ofdevices may be controlled or brought about by theimproved means and'thatthe invention is not limited to a sequence of two operations only.

In orderto enable this invention to be readily understoodreference ismade to the accompanying drawing in which Figure 1 shows in sectionalside elevation means" for hydraulically controlling the opening of aflushing valve in relation to the opening-of a gate or-discharge valve.

Fig. 2 shows more or'less diagrammatically. a similar control between agate or discharge valve and the switch or controller of an electricmotor, and

Fig. 3 shows more or less diagrammati-,"

an apparatus forej ecting discharge orifice before the flushing valve 5is opened in order to supply water for washing the ashes down to the.ejector.

The valve 0 may comprise a rotatable plug formed With apassage cl whichcan be brought into alinement with the ports e and f of the casinginorder to open the-valve. The valve plug mavbe'rotated in anyconvenient manner as for example by the shaft,

g'operating a worm and wormwheel gear not shown. 7.

-ln Fig. 1, the piston a connected with the flushing valr e b, is fittedloosely in its .cyI inder I so that pressure waterarri-ving by thesupply pipe j may get to the closed space at the back of the piston a,and keep the flushing valve b down upon its seat. Thespace at theback ofthe piston a is connect-' e by r a th a elfrc. o ing.v .1,;

and the latter is connected by a pipe p.

With a su able exha s The. plug o h discharge valve 0 has a projection mwhich strikes against the stem n of the valve Land opens the latteragainst the action of the spring 0 at the desired moment. The pres sureis now relieved from the back of the piston 64 and the pressure beneaththe said piston or opens the flushing valve 6, which ema pen s lens athe lflosing valve Z remains open. When the discharge valve 0 is closed,the projection on releases the valve Z which is immediately closed,whereupon pressure again accumulates on theback of the piston a whichpromptly closes the flushing valve be If desired a screw-downarrangement qmay be fitted to the flush-ing valve 6 for screwing it downon to its seat by hand when desired.

Instead of the second valve b be/ing a flush valve, it may be a steamvalve, or any other valve which is only required to open when the firstvalve hasbeen opened fully or to a certain extent.

In the modification seen in Fig. 2, the valve 0, controls, in itsopening and closing movements, the manipulation" of a motor switch orcontroller 1. The switch 7' may control an electric motor which drives acentrifugal pump for supplying water to the ejector. In thismodification the rod of the piston a is connected with the switch arm rand the cylinder h is constantly supplied with water under pressure bythe pipe 8 through a preferably constricted port t. This pressurewatercannot normally escape through pipes/b, p, because the valve 1 isnormally closed as in Fig. 1. Therefore the piston a is normally held inthe rlght hand dotted line position and holds the switch arm 1 in an offposition. When the valve c" has been opened and the valve Z lifted bythe'projection on the valve 0, the pressure waterescapes fromthecylinderit through the pipesls and p and the switch arm'r may then be freely"operatedby hand or by automatic means. When the valve 0 is closed thuspermitting the valve Z to close,

the pressure-inthe cylinder- It quickly rises and forces the piston aand switch arm 7 into the dotted or offposition.

, According to a further-modification illustrated in Fig. 3 theprojection on strikes a rodu at the' desiredmoment, andforces a pistonv; into its cylinder to, the displaced fiuidbeing forced through a pipem into a space behind the piston 'a connected with the valve Z), thelatter being therebyopened. fhere may be a tank or accumulator at yadapted to keep the-pipe w and'spaces; in the;

cylinders ifi-lled,'"'-A' back pressure valve dis fittedto-preventreturn flow, I

' .hereinbefore indicated, the improvements are applicable to mechanicaldevices areferredto, others r -a inappara'tus of tl kind h siva raal hac according to a predetermined order or se quence, the. saidimprovements providing a fluid lock which resists or prevents operationof the secondary device until the correct moment is reached in theoperationof the primary device.

I claim. 7

1. Means for controlling the sequence of operations in apparatus forhydraulic dis.- charge of refuse from ships, comprising a passage forrefuse and water, a positively operated main valve for the passage,water. supply means for moving refuse toward said valve, a fluidpressure transmission device connecting said valve with the control ofsaid water supply means and normally resisting movement of said controlin advance of the movement of said valve, and means operable by saidvalve in completing its opening movement for controlling said fluidpressure, whereby the movement of the said control may take place insuccession to that of the said valve, substantially as set forth.

2. In an apparatus for hydraulically dis-' charging refuse from ships,the combination with a discharge valve and a refuse flushing deviceadapted for flushing refuse into the discharge stream, of means forcontrolling the sequence of the coming into operation of said valve andflushing device comprising a positively operated controlling member forthe discharge valve,.a controlling member for the flushing device, apressure fluid control for the last named controlling member, and meansoperable by the movement of the positively operated discharge valve atthe end of the opening movement thereof to actuate the pressure fluidcontrol, whereby the movement of the controlling member for the flushingdevice can take place only after the opening of the discharge valve,substantially as set forth.

3. In an apparatus for hydraulically discharging refuse from ships, thecombination with a discharge valve and a refuse flushing device, ofmeans for controlling the sequence of the coming into operation of saidvalve and said device comprising a positively operated controllingmember for the discharge valve, a controlling member for the flushingdevice, a pressure fluid device normally resisting the movement of thelastnamed controlling member, and means operable by the movement of thepositively operated discharge valve for freeing the flushing devicecontrolling member from the resistance of the pressure fluid,substantially as set forth.

4:. In an apparatus for hydraulically discharging refuse from ships, thecombination with a discharge casing, a manually operated dischargevalve, a flushing device, and

a controlling valve for the flushing device,

of means for controlling the sequence of operations of said valve andsaid flushing between said valves normally resisting the operation ofsaid controlling valve, and means operated during the operation of saiddischarge valve and at the completion of the opening thereof toinfluence the fluid pressure device, whereby at the desired'moment theoperation of the flushing control valve may take place, substantially asset forth.

5. Means for insuring the correct sequence of operations in an apparatusfor discharging refuse from ships, comprising a manually operateddischarge valve, water supply means, hydraulically operated meanscontrolling said water supply means, fluid pressure control means, meanson the discharge valve to operate the fluid pressure control means atthe conclusion of the o ening of the discharge valve, and a fluipressure connectlon between the fluid pressure control means and saidhydraulically operated means, substantially as set forth.

6. Means for insuring the correct sequence of operations in an apparatusfor hydaulically discharging ashes and refuse from ships comprising amanually operated discharge valve, a flushing valve, a fluid'pressurepiston connected with said flushing valve, and a leakage passage fromone side of said piston to the other, a'striking device connected withsaid discharge valve, a sliding rod in the path of said striking device,fluid pressure control means connected with said rod, and a pipeconnecting the last named means with the cylinder of said piston on theone hand and with an exhaust on the other hand, substantially asdescribed.

WILLIAM STEEL PARSONS.

Gopies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. G. 1

